Will Saxon wrote: Hello!
Have checked both MTU on Catalyst 2950 and BGE interface. Both are 1500. Also, I have no problems with 1500 MTU on FreeBSD 4.8R and FXP driver.
Yours truly, Boris
-----Original Message----- From: Boris Kovalenko [mailto:[EMAIL PROTECTED] Sent: Friday, August 01, 2003 2:23 AM To: [EMAIL PROTECTED] Subject: BGE & VLAN stranges
Hello!
I have Compaq DL360G2 with Broadcom BCM5701 Gigabit Ethernet and FreeBSD 5.1R installed. There are no problems if I use bge as usual network card, but when I try to use 802.1Q vlans, I can't receive (only receive, sending is ok) packets more then 1456 bytes! What is the problem? BGE driver, VLAN driver or my network configuration?
Boris,
This sounds normal - your vlan probably has a max MTU of 1464 bytes (one of the ethernet standards uses this instead of 1500 I think). If you want to transmit larger frames, you have to up the MTU on your adapter and on the switch somehow. I think this is referred to as 'jumbo frames.'
If you set the adapter MTU to 1464 you should not have problems sending and receiving, your packets will just get fragmented.
-Will
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